hillsley



(No Model.)

H. LILLEY' & J.'T. HILLSLEY.

SPLIT PULLEY.

' Patented May 22,1883.

UNITED STATEs PATENT OFF CE.

HENRY LILLEY AND JOHN T. HILLS LEY, OF PHILADELPHIA, PA.

SPLIT PULLEY.

SPECIFICATION forming part of Letters Patent No. 277,910, dated May 22, 1883.

Application filed April 19, ms. (No model.)

To all whom it may concern Be it known that we, HENRY LILLEY and JOHN T. HILLSLEY, citizens of the United States, residing at Philadelphia,in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Split Pulleys, ot'which the following is a specification.

Our invention relates to belt-pulleys, which pulleys are constructed in halves or in two pieces; and its object is the construction of a pulley that can be readily disconnected into two parts and placed on a line of shafting without removal of the shaft, otherpulleys, or couplings, and may be as readily disconnected from the shaft without disturbing the same. We attain these objects by the mechanism illustrated in theaecompanying drawings, in which- Figurel is a side view of our improved split pulley. Fig. 2 is a side view of our improved split pulley in two parts. Fig. 3 isa sectional view ofa splitpulley showing ourimprovetnent. Figs4 and 5 are enlarged views of the hubelip. Fig. 6 is an enlarged view of one of the rim-links.

Similar letters refer to similar out the several views.

The mode of constructing our improved split pulley is as follows: The pattern for the pulley is constructed with lugs E E. These lugs and the hub are divided by cores, as is usual iircasting split pulleys. The lugs E E are also cored for the link 13. The pulley, when cast, has a solid face, but split at thehub and lugs E E.

The elipA we prefer to make of wroughtiron. One of the joints is riveted, and forms a hinge, as shown in Fig. 5. .In making these clips we pin them together and form the inner here on a mandrel the size of the pulley-hub. The clips are put on the hubs red hot, where they are allowed to shrink tight on the hub. When placing the clips on the hubs care must be taken to get them in the proper place. As an aid to secure this we core or drill a hole in parts throughthe center web of the pulley, (see F, Fig. 2.) When the pulley is split this pin-hole is half in each part of the pulley, as shown in Fig. 5. The pin P is made long and passes through the two clips.

The link B we prefer to make of wroughtiron. The pinholes may be drilled or punched, and the holes in the lugs E E may be cored in the casting.

WVhen the castingis received from the foundry the clips A A are shrunk on the hubs, as above described, and the links B B pinned in their places, when the pulley is ready to be bored out to fit the shaft it is to be placed on. After boring the hub the set-screws D D are fitted in the hub. These set-screws are screwed through one half of the clip A, as is shown in Figs. 1 and 2. The pulley is now ready for turning its face. After turning, one of the pins in each linkB and thclong pin Pin theclips A A are driven out, theclips opened, as shown in Fig. 2, the face of the pulley is broken in line with the cores in the lugs E E and hub, all of which is well understood by one who is skilled in separating cast split pulleys. The pulley is now ready for placing on a shaft, and is fastened together by driving the pins in the lugs E E, and links B B and clipsA A, when set in position are fastened by the set-screws I) D.

It is obvious that the links B B and clips A A may be made of brass or cast malleable II'OD.

We are aware that a clip for holding two parts together is not'new. Broadly, the clip we do not claim; but

As our invention we claim In a cast pulley to be split. into two parts,

the combination of clips A A, a cored and divided hub, links B B, with a divided rim or face ofa belt-pulley, as shown, described, and for the purpose specified.

HENRY LILLEY. JOHN T. HILLSLEY. Witnesses:

F. P. BUGKLEY, JOHN SHINN. 

